双馈风机故障电流暂态分量中含有衰减的交流分量，导致数字继保设备产生同步测量误差，需准确解析该暂态分量并抵消测量误差，避免保护装备勿动。现有研究适用于故障发生在风机近端情况，发生远端故障时，计算误差随着故障远离机端而增加。为揭示远端故障下双馈风机故障暂态电流的演变特性，提出一种复频域下双馈风机故障暂态电流计算方法，建立故障回路中存在故障阻抗时的电压响应二阶动态方程，在撬棒保护电路投入的情景下，推导出复频域及时域中故障电流的计算公式，可解析双馈风机故障电流各暂态分量幅值、频率及衰减信息。针对同步相量测量误差，建立全波傅立叶连续积分模型，量化双馈风机中暂态交流分量引入的测量误差。采用全阶电磁暂态仿真模型进行验证，结果表明所提方法可准确计算故障回路含故障阻抗时双馈风机暂态故障电流，相对于现有方法，峰值计算误差从9%以上降低至3%以下。此外，相对于全阶电磁暂态“黑盒”仿真，本文所提计算方法可实现各暂稳态分量的解析计算，并进一步采用所提傅立叶连续积分模型可量化同步相量测量误差，为双馈风机接入系统的继电保护及控制运行提供理论支撑。

The transient component of the fault current in doubly-fed induction generators (DFIGs) contains a decaying AC component, which causes synchronization measurement errors in digital relay protection devices. Therefore, it is necessary to accurately analyze this transient component, offset the measurement errors, and prevent the misoperation of protection equipment. Existing studies are applicable when faults occur near the generator terminals. When faults occur at remote locations, however, calculation errors increase as the fault distance from the generator terminals increases. To reveal the evolution characteristics of DFIG fault transient currents under remote faults, this study proposes a method for calculating DFIG fault transient currents in the complex frequency domain. First, a second-order dynamic equation for voltage response is established when fault impedance exists in the fault circuit. Then, under the scenario where the crowbar protection circuit is activated, the calculation formulas for fault currents in both the complex frequency domain and time domain are derived. These formulas can analyze the amplitude, frequency, and decay information of each transient component of the DFIG fault current. For synchronization phasor measurement errors, a full-wave Fourier continuous integral model is established to quantify the measurement errors caused by transient AC components in DFIGs. A full-order electromagnetic transient simulation model is used for verification. The results show that the proposed method can accurately calculate the DFIG transient fault current when the fault circuit contains fault impedance. Compared with existing methods, the peak calculation error is reduced from over 9% to less than 3%. In addition, compared with the full-order electromagnetic transient "black-box" simulation, the proposed calculation method can realize the analytical calculation of each transient and steady-state component. Furthermore, the proposed Fourier continuous integral model can quantify synchronization phasor measurement errors. This provides theoretical support for the relay protection and control operation of systems integrated with DFIGs.